adkry
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Edit Spice simulation model of TLV2772 operational amilifer to work on single supply not dual supply
Hello Guys,
I'm using the TLV2772 and the TLV2774 operational amplifiers in my electronics circuit to construct low pass, high-pass and notch filter.
They are supposed to work using single supply i.e. +5V and Ground (no -ve supply required), however, the Simulation Models which I got from the TI website which you can download here http://www.ti.com/litv/zip/sloj019 works perfectly on the MultiSim 11.0 software (by National Instruments) only when using dual supply only (i.e. I have to connect it using +5 and -5 for it to work correctly).
Here is the simulation model for easy reach and view
How can I edit it so that the device works perfectly without -5, rather Ground be used. I didn't test the real device yet, but on reality will it work with single supply or will it need -5 V ??
Please help.
I'm using the TLV2772 and the TLV2774 operational amplifiers in my electronics circuit to construct low pass, high-pass and notch filter.
They are supposed to work using single supply i.e. +5V and Ground (no -ve supply required), however, the Simulation Models which I got from the TI website which you can download here http://www.ti.com/litv/zip/sloj019 works perfectly on the MultiSim 11.0 software (by National Instruments) only when using dual supply only (i.e. I have to connect it using +5 and -5 for it to work correctly).
Here is the simulation model for easy reach and view
* TLV2772 operational amplifier "macromodel" subcircuit
* created using Parts release 8.0 on 12/12/97 at 10:08
* Parts is a MicroSim product.
*
* connections: non-inverting input
* | inverting input
* | | positive power supply
* | | | negative power supply
* | | | | output
* | | | | |
.subckt TLV2772 1 2 3 4 5
*
c1 11 12 2.8868E-12
c2 6 7 10.000E-12
css 10 99 2.6302E-12
dc 5 53 dy
de 54 5 dy
dlp 90 91 dx
dln 92 90 dx
dp 4 3 dx
egnd 99 0 poly(2) (3,0) (4,0) 0 .5 .5
fb 7 99 poly(5) vb vc ve vlp vln 0 15.513E6 -1E3 1E3 16E6 -16E6
ga 6 0 11 12 188.50E-6
gcm 0 6 10 99 9.4472E-9
iss 3 10 dc 145.50E-6
hlim 90 0 vlim 1K
j1 11 2 10 jx1
j2 12 1 10 jx2
r2 6 9 100.00E3
rd1 4 11 5.3052E3
rd2 4 12 5.3052E3
ro1 8 5 17.140
ro2 7 99 17.140
rp 3 4 4.5455E3
rss 10 99 1.3746E6
vb 9 0 dc 0
vc 3 53 dc .82001
ve 54 4 dc .82001
vlim 7 8 dc 0
vlp 91 0 dc 47
vln 0 92 dc 47
.model dx D(Is=800.00E-18)
.model dy D(Is=800.00E-18 Rs=1m Cjo=10p)
.model jx1 PJF(Is=2.2500E-12 Beta=244.20E-6 Vto=-.99765)
.model jx2 PJF(Is=1.7500E-12 Beta=244.20E-6 Vto=-1.002350)
.ends
*$
How can I edit it so that the device works perfectly without -5, rather Ground be used. I didn't test the real device yet, but on reality will it work with single supply or will it need -5 V ??
Please help.
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ASKER
@algorith
Thank you for your answer and help.
I've checked Figure 62 in the datasheet, I didn't quite get the aim. The TLV2772 should work fine with single supply (shouldn't it?) i.e. just connect +5 V to Vdd and 0V to Vss and it should all work fine.
Do you think the problem is not in the simulation model ? Is the problem in my circuit ? Here's a screenshot of my circuit
Please advise and be elaborate in your answer.
Thank you for your answer and help.
I've checked Figure 62 in the datasheet, I didn't quite get the aim. The TLV2772 should work fine with single supply (shouldn't it?) i.e. just connect +5 V to Vdd and 0V to Vss and it should all work fine.
Do you think the problem is not in the simulation model ? Is the problem in my circuit ? Here's a screenshot of my circuit
Please advise and be elaborate in your answer.
ASKER
Hello Algorith, can you help me with this question as well please https://www.experts-exchange.com/questions/27465862/How-to-make-my-circuit-work-on-batteries.html#37333425
ASKER
Thanks the simulation is fine, I just need virtual ground
ASKER